This map comes from Solstice: An Electronic Journal of Geography and Mathematics (Volume VII, Number 1, 1996) at the University of Michigan. Authors John Nystuen, Rhonda Ryznar, and Thomas Wagner.
Figure 6. In Figure 6, census tracts with the largest increase in greenness are shown with the darkest green and brown tones. Superimposed on this colored pattern are census tracts of high social stress (cross-hatched). High social stress census tracts are defined as those tracts with decrease in population greater than 25% between 1980 and 1990 and with more than 50% of children below the poverty level. There is substantial correspondence between the two patterns.